A group of 65 randomly selected students have a mean score of 30.6 with a standard deviation of 5.4 on a placement test. What is the 90% confidence interval for the mean score ,(mu) of all students taking the test? Use the confidence level and sample data to find a confidence interval for estimating the population H. Round your answer to the same number of decimal places as the sample mean.A group of 65 randomly selected students have a mean score of 30.6 with a standard deviation of 5.4 on a placemnent test. What is the 90% confidence interval for the mean score, u, of all students taking the test?dno18O 29.3< u <31.9O 29.5< u <31.7O 28.9 < u <32.3O 29.0

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Answered: A group of 65 randomly selected…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A group of 65 randomly selected students have a mean score of 30.6 with a standard deviation of 5.4 on a placement test. What is the 90% confidence interval for the mean score ,(mu) of all students taking the test?

Use the confidence level and sample data to find a confidence interval for estimating the population H. Round your answer to the same number of decimal places as the sample mean.
A group of 65 randomly selected students have a mean score of 30.6 with a standard deviation of 5.4 on a placemnent test. What is the 90% confidence interval for the mean score, u, of all students taking the test?
dno18
O 29.3< u <31.9
O 29.5< u <31.7
O 28.9 < u <32.3
O 29.0 <u <32.2
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